Why is solid water, ice, unique? (1 point)

Solid water is more dense than its liquid form.

Solid water has different chemical properties than its liquid form.

Solid water is heavier than its liquid form.

Solid water is less dense than its liquid form.

Solid water, ice, is less dense than its liquid form, which is why it floats on water. This unique property is due to the hydrogen bonds that form a crystalline structure when water freezes, causing the molecules to space out and expand in volume, leading to a decrease in density.